Injection Moulding Process

Injection moulding process is divided into many types. The rotational moulding process method is that to add plastic into the mould first, and then the mould is continuously rotated along two vertical axes and heated. The plastic in injection mould is gradually and evenly distributed under the action of gravity and heat energy, melted and adhered to the entire surface of the cavity, formed into a desired shape, and cooled and moulded.


The rotational moulding process has the following advantages over conventional blow moulding and injection moulding processes:

1. Cost advantage
   In the rotational moulding process, only the strength of the frame is required to support the weight of the material, the mould, and the frame itself, so as to prevent the material from leaking due to the closing force of injection mould. And material is in the entire injection moulding process, in addition to the effect of natural gravity, it is hardly affected by any external force. So that it is fully equipped with the advantage of convenience of machining and manufacturing, short cycle, and low cost.
   
   
2. Quality advantage
   During the entire production process, the quality and structure of injection moulded product are more stable due to that there's no internal stress produced. The mould of rotating moulding process machine is easy to manufacture and low in price, so it is particularly suitable for the production of many varieties and small batches in the development of new products.
   
   
3. Personalized design advantages.
   Products in rotating moulding process can be easily changed the color, and can be hollow (seamless and non-welding). In the surface treatment of products, the effect of pattern, wood, stone and metal can be achieved, satisfying consumers in modern society personalized needs.

The products produced by this process include: fuel tanks, water tanks, mechanical enclosures, fenders, etc. The main alternatives are metal parts and glass steel products.

Injection moulding processing is a technology that is based on microfabrication technology such as LIGA, and of course there are many other methods. The LIGA process is to produce a model that is needed for injection moulding, which is commonly known as "mould" . And then the liquid plastic is poured into the mould, and finally separated to form the final desired product. For example, some plastic toys, and many other products.